HT45B0F NSOP16

The HT45B0F is microcontroller peripheral device to implement SPI-to-UART data conversions. The UART module can operate in full-duplex mode with an interrupt output capability to the host microcontroller. Possible application could include data communication networks between microcontrollers, low-cost data links between PCs and peripheral devices, portable and battery operated devices, factory automation and process control to name but a few.

CPU Features

Operating voltage
fSYS= 8MHz: 2.2V~5.5V
fSYS=12MHz: 2.7V~5.5V
fSYS=16MHz: 3.3V~5.5V
fSYS=20MHz: 4.5V~5.5V
Up to 0.2us instruction cycle with 20MHz system clock at VDD=5V
Power down and wake-up functions to reduce power consumption
Oscillator type
– External High Speed Crystal — HXT
– Internal High Speed RC — HIRC
– External 32.768kHz Crystal — LXT
– Internal 32kHz RC — LIRC
Fully integrated internal 8/12/16MHz oscillator requires no external components
Multi-mode operation: NORMAL, SLOW, IDLE and SLEEP
All instructions executed in one to three instruction cycles
Table read instructions
115 powerful instructions
Up to 12-level subroutine nesting
Bit manipulation instruction

Peripheral Features

Operating Voltage
fCLKI= 12MHz: 2.0V~5.5V
fCLKI= 16MHz: 2.7V~5.5V
fCLKI= 20MHz: 4.5V~5.5V
Glueless slave SPI interface to Holtek’s MCU
Full-duplex, Universal Asynchronous Receiver and Transmitter (UART) communication
— 8 or 9 bit character length
— Even, odd or no parity options
— One or two stop bits
— Baud rate generator with 8-bit prescaler
— Parity, framing, noise and overrun error
detection
— Support for interrupt on address detect
— Address Detect Interrupt – last character
bit=1
— Transmitter and receiver enabled
independently
— 4-byte deep FIFO receiver data buffer
— Transmit and Receive Multiple Interrupt
Generation Sources:
*  Transmitter Empty
*  Transmitter Idle
*  Receiver Full
*  Receiver Overrun
*  Address Mode Detect
— TX pin is high impedance when the
UART transmit module is disabled
— RX pin is high impedance when the
UART receive module is disabled
CMOS clock input, CLKI, up to 20MHz at 5V operating voltage
16-pin NSOP package